Numerical Study of Nonlinear Ship Rolling and Anti-Roll Tank Effect

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Shams, Shahab | 2022

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 56410 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Saif, Mohammad Saeed
Abstract:
This thesis investigates nonlinear rolling of ships and effect of anti-rolling tanks. For this purpose numerical method is used. For studying this phenomenon, a program was developed in Simulink module of commercial software, MATLAB and roll motion has been simulated. The program has been developed so it can be used for displacement commercial vessels with a typical hull form and the simulated tank is a U-shape type tank. Simulation is 1-DOF and for rolling in regular waves with different encounter angel except for head sea and following sea. Results are included of roll degree, angular velocity and acceleration of ship and tanks fluid roll, encounter wave moment on ship and moment imposed on ship by tank which are compared for investigating roll motion with and without anti-roll tanks
Keywords:
Nonlinear Rolling ; Roll Decay ; Anti-Roll Tank ; Roll Simulation ; U-Shape Tank ; Numerical Investigation

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